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Jurnal Periodic Jurusan Kimia UNP

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23391197 DOI : https://doi.org/10.24036/p.v11i2.113715

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 20 Documents

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Search results for , issue "Vol 11, No 1 (2022): PERIODIC" : 20 Documents clear

Pengaruh pH dan Ukuran Partikel Terhadap Penyerapan Malachite Green Menggunakan Biosorben Dari Kulit Langsat (Lancium domesticum) Sutan M Razali; Desy Kurniawati; Edi Nasra; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i1.113477

The malachite green dye is one of the harmful dyes produced from various textile industry wastes and needs to reduce by the presence of the waste. The biosorption method is one of the alternative methods used to remove the concentration of malachite green. Biosorption using langsat peel biosorbent proved to be able to absorb malachite green dye. This study using the coloum method by varying the pH of the MG solution and particle size of the biosorbent. In this research, spectronics were used to measure the concentration of the solution and analyze the functional groups on langsat peel before activation, after activation, and after contact using FTIR. Based on the results of the study, it was found that the optimum conditions for each variation were at solution pH 5 with an adsorption rate of 4.962 mg/g and particle size of biosorbent 106 m with an adsorption rate of 15.376 mg/g.

Karakterisasi Komposit Selulosa Bakteri – Ekstrak Daun Kacapiring (Gardenia Jassminoides J.Ellis) dengan Penambahan Crosslinker Muhammad Iqbal; Elsa Yuniarti; Ali Amran; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Bacterial cellulose (BC) can be applied in various fields such as biomedical, separation membranes, artificial blood vessels, and substrates for cartilage tissue engineering. Bacterial cellulose still has low mechanical properties, so a bacterial cellulose composite was formed with Gardenia Leaf Extract (CBC-GLE) to obtain higher mechanical properties. The purpose of this study was to determine the effect of adding crosslinker starch 1,2 and 3% soaked with CBC-GLE to form (CBC-GLEC) by knowing the mechanical, physical, and structural properties of (CBC-GLEC). Bacterial cellulose is produced from a mixture of coconut water, sugar and urea. Then fermented with Acetobacter Xylinum for 14 days. Bacterial cellulose was composited with gardenia leaf extract and was called the bacterial cellulose-gardenia leaf extract composite (CBC-GLE). BC, CBC-GLE and CBC-GLEC were characterized by testing water content, tensile strength, compressive strength, structural analysis using FTIR and degree of crystallinity using XRD. The addition of Crosslinker can reduce the percentage of water content of CBC-GLEC 3% with a value of 90.73%, CBC-GLE 95.69% and BC 99.21%. The best tensile strength test results were the addition of crosslinked amilum starch with a concentration of 3% (CBC-GLEC) with a value of 121.45 MPa, CBC-GLE 49.81 MPa and BC 32.09 MPa. The best compressive strength test results were the addition of starch crosslinker with a concentration of 3% (CBC-GLEC) with a value of 4.38 mm, CBC-GLE 3.42 mm and BC 2.65 mm. The results of the FTIR spectrum showed that the functional groups contained in cellulose only experienced a shift, while the results of the analysis of the degree of crystallinity showed that the percentage of the degree of crystallinity of BC was 75.47%, CBC-GLE 94.42 %, CBC-GLEC starch 3% was 67.26 %

Degradasi Zat Warna Methyl Violet dengan Katalis ZnO/Ag Menggunakan Metode Fotosonolisis Rahma Sari; Hary Sanjaya; Yohandri Yohandri; Ali Amran; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract – the photosonolysis method was used for the degradation of methyl violet in the sample solution using a ZnO doping Ag catalyst. This study aims to determine the effect of radiation time and the addition of Ag doping on ZnO catalyst on the degradation of Methyl violet. UV-Vis spectrophotometer was used to calculate the absorbance concentration of methyl violet before and after degradation while UV-DRS was used to measure the band gap value. The results showed that the highest percentage of Methyl violet degradation was 93.51% at 120 minutes using ZnO without doping. The highest degradation of methyl violet was at 90.50% using a 10% ZnO/Ag catalyst. the band gap obtained from the measurement of ZnO/Ag is 3.26%.Keywords: degradasi, Methyl Violet, ZnO/Ag, Photosonolysis, Band gap

Preparasi Karbon Aktif dari Sabut Kelapa dengan Aktivator Gelombang Mikro untuk Adsorpsi Rhodamin B Nahdatul Aulia; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i1.113364

Activated carbon from coconut husk has been prepared by using microwave assisted activation. Carbonization was conducted at mild condition of 250ºC for 105 minutes heating time. Optimum activated carbon is obtained by using microwave assisted activation at 300 watts of iradiation for 4 minutes contact time with iodine number is 779,7604 mg/g. Characterization of activated carbon using FTIR and proximate analysis (water content, vaporcontent, ash content, bound carbon content and iod absorption). Adsorption test showed that the prepared activated carbon was able to absorp Rhodamin B at the optimum concentration of 200 mg/L. Adsorption isoterm study conducted by Langmuir equation with a regression coefficient R2 = 0,9640 with a maximum absorption capacity of 2,923 mg/g. FTIR characterization showed that the activated carbon contains a fungsional groups O-H at wave numbers 3600-3200 cm-1, C=C at wave numbers 1500-1650 cm-1, and C-O at wave numbers 1300-900 cm-1.

Ekstraksi dan Karakterisasi Betasianin dari Kulit Buah Naga Merah (Hylocereus sp.) Rendi Ananda; Minda Azhar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Betacyanin is a water-soluble pigmentation compound found in the skin of red dragon fruit. Betacyanin extraction aims to determine the functional group and its maximum wavelength using FTIR and UV-Vis spectrophotometers, respectively. Extraction of betacyanin from dragon fruit peel using ethanol and water in a 1:1 ratio with a stirring speed of 900 rpm for 16 hours. Characterization of betacyanin using FTIR showed betacyanin has an amine group or bond (N-H) derived from betalamic acid which is typical at wave numbers 1798-1607 cm-1. At a wave number of 1486 cm-1 , it shows the presence of C=C strain vibrations from the aromatic ring. Betacyanin characterization using UV-Vis spectrophotometer showed a maximum wavelength of 530 nm.

Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil dari Sistem Air, Surfaktan Nonionik (Brij 35) dan Pentanol Hanny Sri Asih; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Research on solubility from organic pigments of turmeric (Curcuma longa Linn) and telang flower (Clitoria ternatea L.) in water-in-oil microemulsion gelation on system of water, nonionic surfactant (Brij 35) and pentanol has been studied. The purpose of this research was the preparation of water-in-oil microemulsion gelation, determines solubility, density, and bias index of organic pigments in water-in-oil microemulsion gelation on system of water, nonionic surfactant (Brij 35) and pentanol. The method used is the sol-gel method. The solubility in water-in-oil microemulsion gelation of turmeric is 2,41832% (pH 4,5) and 2,61402% (pH 9,5) and telang flower is 1,21274% (pH 4,5) and 1,6136% (pH 9,5). The bias index of turmeric is 1,4024 (pH 4.5) and 1,4034 (pH 9,5) and telang flower is 1,4004 (pH air 4,5) and 1,4014 (pH 9,5).The density of turmeric is 0,88778g/cm3 (pH 4,5) and 0,88912g/cm3 (pH 9,5) and telang flower is 0,8793g/cm3 (pH 4,5) and 0,8872g/cm3 (pH 9,5).

Degradasi Asam Humat Pada Air Rawa Gambut menggunakan Metode Fotosonolisis dengan Bantuan Katalis ZnO Alfindri Zulkarnaini; Hary Sanjaya; Yohandri Yohandri; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Photosonolysis method can be used to degrade humic acid in peat swamp water with the help of ZnO catalyst. This study aims to determine the effect of time variation and catalyst variation on peat swamp degradation. UV-Vis spectrophotometer was used to calculate the absorbance concentration of peat swamp air before and before degradation. The results showed that the highest percentage of peat swamp water degradation was 26.81% at 120 minutes using a ZnO catalyst. The highest degradation of peat swamp water was at 21.99% with a mass catalyst of 0.3 grams of ZnO

Kelarutan Zat Warna Organik Dalam Gelasi Mikroemulsi Water In Oil Sistem Air, Surfaktan Kationik (Hexadecyl Trimethyl Ammonium Bromide) dan Pentanol Pamela Jurdilla; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Research on the solubility of organic dyes in gelation microemulsion water in oil (w/o) water system, cationic surfactant (Hexadecyl Trimethyl Ammonium Bromide) and pentanol aims to prepare gels from microemulsion (w/o) using the sol-gel method by adding TEOS and ethanol in a ratio of 1:8 mol which hydrolyzed with water to form a gel, the percentage of organic dye solubility of turmeric powder at pH 4,5 and 9,5 3,92% and 3,95% then dragon fruit peel powders 1,96% and 1,93% at pH 4,5 and 9,5. Respectively, density testing can be carried out to see the concentration of the dye with greatest value that is turmeric powder 0,8677 g/cm3 and 0,8684 g/cm3 for pH 4,5 dan 9,5. Measurement of refractive index to see the homogeneity of the largest solution is turmeric at pH 4,5 and 9,5 namely 1,4014 and 1,4024.

EKSTRAKSI DAN KARAKTERISASI KATEKIN DARI GAMBIR (Uncaria gambir roxb) Isriza Mahendra; Minda Azhar
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Gambir is the result of extraction from the gambier plant (Uncaria gambir roxb) where this plant contains polyphenolic compounds, namely catechins. Catechins are classified as flavanol compounds (flavon-3-ol) and are antioxidant compounds. The aim of the study was to determine the characteristics of the catechins extracted from gambier.Characterization of extracted catechins using FTIR showed characteristic absorption areas for the OH group at the peak of 3000-3700 cm-1 (3307), the C=C group around 1600 cm-1 (1607), and the CO group (1150-1010 cm-1) ( 1017). Characterization of extracted catechins using UV-Vis Spectrophotometer has a maximum wavelength of 290 nm. These characteristics are very similar to standard catechins.

Degradasi Zat Warna Methanil Yellow Menggunakan Metoda Fotosonolisis dengan Bantuan Katalis ZnO Reska Putri; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 1 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Research that has been carried out on the photosonolysis degradation of methanyl yellow using a ZnO catalyst aims to determine the effect of radiation time on the degradation of methanyl yellow. The degradation time is about 30 to 150 minutes using a ZnO catalyst. The measurement results of the Uv- Vis spectrophotometer were obtained at a wavelength of 437nm. In the variation of the degradation time, the highest result was obtained at 60 minutes which was 76,11 %. This study showed that the hydroxyl radical (∙OH) was the main control in degrading methanil yellow

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Budhi Oktavia

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Journal Mail Official periodic@fmipa.unp.ac.id

Editorial Address Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

Location Kota padang, Sumatera barat INDONESIA

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Contact Name
Budhi Oktavia

Contact Email
budhioktavia@fmipa.unp.ac.id

Phone
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Journal Mail Official
periodic@fmipa.unp.ac.id

Editorial Address
Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

Location
Kota padang,

Sumatera barat

INDONESIA